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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch104
1 files changed, 104 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch b/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch
new file mode 100644
index 0000000000..967cc76442
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0268-overlays-Add-ssd1306-overlay-for-OLED-display.patch
@@ -0,0 +1,104 @@
+From d8eac0d3e4f6c6f9e5f789c8e2288699b2afebcb Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Mon, 21 Jan 2019 21:17:27 +0000
+Subject: [PATCH] overlays: Add ssd1306 overlay for OLED display
+
+See: https://github.com/raspberrypi/firmware/issues/1098
+
+Signed-off-by: mincepi <mincepi@gmail.com>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 31 ++++++++++++++++
+ .../arm/boot/dts/overlays/ssd1306-overlay.dts | 36 +++++++++++++++++++
+ 3 files changed, 68 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/ssd1306-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -135,6 +135,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ spi2-1cs.dtbo \
+ spi2-2cs.dtbo \
+ spi2-3cs.dtbo \
++ ssd1306.dtbo \
+ superaudioboard.dtbo \
+ sx150x.dtbo \
+ tc358743.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1950,6 +1950,37 @@ Params: cs0_pin GPIO pin
+ is 'okay' or enabled).
+
+
++Name: ssd1306
++Info: Overlay for activation of SSD1306 over I2C OLED display framebuffer.
++Load: dtoverlay=ssd1306,<param>=<val>
++Params: address Location in display memory of first character.
++ (default=0)
++ width Width of display. (default=128)
++ height Height of display. (default=64)
++ offset virtual channel a. (default=0)
++ normal Has no effect on displays tested. (default=not
++ set)
++ sequential Set this if every other scan line is missing.
++ (default=not set)
++ remapped Set this if display is garbled. (default=not
++ set)
++ inverted Set this if display is inverted and mirrored.
++ (default=not set)
++
++ Examples:
++ Typical usage for 128x64 display: dtoverlay=ssd1306,inverted
++
++ Typical usage for 128x32 display: dtoverlay=ssd1306,inverted,sequential
++
++ i2c_baudrate=400000 will speed up the display.
++
++ i2c_baudrate=1000000 seems to work even though it's not officially
++ supported by the hardware, and is faster still.
++
++ For more information refer to the device datasheet at:
++ https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
++
++
+ Name: superaudioboard
+ Info: Configures the SuperAudioBoard sound card
+ Load: dtoverlay=superaudioboard,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/ssd1306-overlay.dts
+@@ -0,0 +1,36 @@
++// Overlay for SSD1306 128x64 and 128x32 OLED displays
++/dts-v1/;
++/plugin/;
++
++/ {
++ compatible = "brcm,bcm2718";
++
++ fragment@0 {
++ target = <&i2c1>;
++ __overlay__ {
++ status = "okay";
++
++ #address-cells = <1>;
++ #size-cells = <0>;
++
++ ssd1306: oled@3c{
++ compatible = "solomon,ssd1306fb-i2c";
++ reg = <0x3c>;
++ solomon,width = <128>;
++ solomon,height = <64>;
++ solomon,page-offset = <0>;
++ };
++ };
++ };
++
++ __overrides__ {
++ address = <&ssd1306>,"reg:0";
++ width = <&ssd1306>,"solomon,width:0";
++ height = <&ssd1306>,"solomon,height:0";
++ offset = <&ssd1306>,"solomon,page-offset:0";
++ normal = <&ssd1306>,"solomon,segment-no-remap?";
++ sequential = <&ssd1306>,"solomon,com-seq?";
++ remapped = <&ssd1306>,"solomon,com-lrremap?";
++ inverted = <&ssd1306>,"solomon,com-invdir?";
++ };
++};